1. Research Animals Department, RSPCA, Wilberforce Way, Southwater, West Sussex RH13 9RS, UK;
2. Animals (Scientific Procedures) Inspectorate, Home Office, PO Box 6779, Dundee DD1 9WW, UK;
3. Biological Services, The University of Edinburgh, Chancellor Building, 49, Little France Crescent, Edinburgh EH16 4SB, UK;
4. CEFAS, Pakefield Road, Lowestoft, NR33 0HT, UK;
5. King's College London, Biological Services Unit, 4th floor, Hodgkin Building, Guy's Campus, London SE1 1UL, UK;
6. Norecopa, c/o Norwegian Veterinary Institute, PO Box 750 Sentrum, N-0106 Oslo, Norway